Datasheet
www.ti.com
Recommended Operating Conditions
(1) (2) (3) (4)
SN74LVC8T245
8-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES584A – JUNE 2005 – REVISED AUGUST 2005
V
CCI
V
CCO
MIN MAX UNIT
V
CCA
1.65 5.5
Supply voltage V
V
CCB
1.65 5.5
1.65 V to 1.95 V V
CCI
× 0.65
2.3 V to 2.7 V 1.7
High-level
V
IH
Data inputs
(5)
V
input voltage
3 V to 3.6 V 2
4.5 V to 5.5 V V
CCI
× 0.7
1.65 V to 1.95 V V
CCI
× 0.35
2.3 V to 2.7 V 0.7
Low-level
V
IL
Data inputs
(5)
V
input voltage
3 V to 3.6 V 0.8
4.5 V to 5.5 V V
CCI
× 0.3
1.65 V to 1.95 V V
CCA
× 0.65
2.3 V to 2.7 V 1.7
High-level Control inputs
V
IH
V
input voltage (referenced to V
CCA
)
(6)
3 V to 3.6 V 2
4.5 V to 5.5 V V
CCA
× 0.7
1.65 V to 1.95 V V
CCA
× 0.35
2.3 V to 2.7 V 0.7
Low-level Control inputs
V
IL
V
input voltage (referenced to V
CCA
)
(6)
3 V to 3.6 V 0.8
4.5 V to 5.5 V V
CCA
× 0.3
V
I
Input voltage Control inputs 0 5.5 V
Active state 0 V
CCO
V
Input/output
V
I/O
voltage
3-State 0 5.5 V
1.65 V to 1.95 V –4
2.3 V to 2.7 V –8
I
OH
High-level output current mA
3 V to 3.6 V –24
4.5 V to 5.5 V –32
1.65 V to 1.95 V 4
2.3 V to 2.7 V 8
I
OL
Low-level output current mA
3 V to 3.6 V 24
4.5 V to 5.5 V 32
1.65 V to 1.95 V 20
2.3 V to 2.7 V 20
Input transition
∆ t/ ∆ v Data inputs ns/V
rise or fall rate
3 V to 3.6 V 10
4.5 V to 5.5 V 5
T
A
Operating free-air temperature –40 85 ° C
(1) V
CCI
is the V
CC
associated with the data input port.
(2) V
CCO
is the V
CC
associated with the output port.
(3) All unused or driven (floating) data inputs (I/Os) of the device must be held at logic HIGH or LOW (preferably V
CCI
or GND) to ensure
proper device operation and minimize power. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature
number SCBA004.
(4) All unused control inputs must be held at V
CCA
or GND to ensure proper device operation and minimize power comsumption.
(5) For V
CCI
values not specified in the data sheet, V
IH
min = V
CCI
× 0.7 V, V
IL
max = V
CCI
× 0.3 V.
(6) For V
CCA
values not specified in the data sheet, V
IH
min = V
CCA
× 0.7 V, V
IL
max = V
CCA
× 0.3 V.
4